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Finding the Fourth Proportional to 8,734.85, 12,051.46 and 7,892.85

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Solution

The fourth proportional to 8,734.85, 12,051.46 and 7,892.85 is: 10,889.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,734.85 : 12,051.46 = 7,892.85 : x
  2. Step 2: Convert to fraction form
    8,734.85/12,051.46 = 7,892.85/x
  3. Step 3: Cross multiply
    8,734.85x = 12,051.46 × 7,892.85
  4. Step 4: Simplify right side
    8,734.85x = 95,120,421.12
  5. Step 5: Solve for x
    x = 95,120,421.12/8,734.85
  6. Step 6: Final answer
    x = 10,889.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.